03RallyLancer

iTrader: (6)

u could always pm rpw and ask if they are interchangable and see what he says.

and i believe our rev limiter is somewhere around 6200-300 rpms

KillahB

iTrader: (7)

Is that the limiter or is that when redline begins? I am almost sure I naile 7100 RPMs in the G93 and I know I can rev past 6500 (since I did it yesterday).... then again, looking at it logically, with a longer stroke, the sacrifice would be "revviness"...

Blacksheepdj

iTrader: (88)

Red line is at 6k

Limiter is around 6200 or 6300 (maybe 6250? ).

03RallyLancer

iTrader: (6)

a mitsu tech did tell me that our motor could probably handle another 800-1000 rpms or so on stock trim... he said a lancer came in one day with a bent rod(thats what they thought) and then one of the lower mechanics were messing with it and the throttle stuck and he said it ran up in some high revs for about 2 mins before it poped. Dont know how much of it is true though.

Blacksheepdj

iTrader: (88)

RRMs reflash took the rev limiter up to 7200, as I recall. So I think you're telling the truth 03RallyLancer.

Too bad they no longer make it...

ItsTheDriver13

iTrader: (6)

alot of this conversation is a bit over my head, but are you guys talking about extending the fuel cut off, or what? i thought mathematically the oz could only hit like 134.6 in 5th gear because of fuel cut off from being in the red or something like that. ive never done it, as i treat my car pretty well, but im curious.

i did read the whole thread tho, and im trying to distinguish between the red line (whcih we are NOT supposed to cross i know), the fuel cut off, and the rev limiter. are those 3 things at different points? What can the motor take? Its red for a reason lol.

twardnw

iTrader: (4)

the red is more to give you an idea of what limits you are pushing, they could put that any where they want, it's just paint. rev-limit and fuel cutoff are synonymous, or I should say, fuel cutoff is the rev-limit

KillahB

iTrader: (7)

I disagree slightly.... redline is calculated based on the car's efficiency and power, and basically is the manufacturer saying that anything above this marker can risk serious damage to the engine (recall red always is some kind of warning)... the rev limit and fuel cut are not synonymous however. The rev limit is a "limiter" in place from having stupid peple over rev the engine and spin bearings, whereas fuel cut is another limiter in place to prevent excessive speeds. What it does, is at a certain speed, it kicks in, shuts of fuel and throttle response to the engine and slows you down about 10 - 15 mph before anything happens again. You can hit rev limit without hitting fuel cut and vice versa. However, some cars do have a fuel cut in their rev limiter, as an overrun protection, hence where the two start getting mixed up.

rhyzin

iTrader: (1)

lol. we all have different definitions.

redline = recommended point not to rev past.
rev limiter = limits revs to a certain point as AQ was saying.
fuel cut = ecu seeing too much air input and cuts fuel. i've only really read about this on DSM or boosted cars.
speed governor = cuts fuel to keep car from going past a certain speed.

KillahB

iTrader: (7)

Absolutely correct.... fuel cut is more of a defence mechanism in boosted cars to prevent them from overboosting and blowing up. But I have seen it referred to as the speed governor as well.

Toe-MAY-toe ... toe-MAH-toe, i guess

Or Quez, shut the hell up

twardnw

iTrader: (4)

I thought that the way our cars did the rev-limit was by cutting the fuel? and yes, in principle, that would be a govenor as well.

So basically, for us, rev-limit, fuel cut, and govenor are all the same?

rhyzin

iTrader: (1)

not particularly. we have a redline and rev-limit for sure which are RPM dependent, only a handful can confirm the speed governor that is speed dependent, and we don't have "fuel cut" by definition of cutting fuel because of too much air read by the MAS.

twardnw

iTrader: (4)

right, I wasn't thinking fuel cut because of too much air, I was thinking the fuel cut was how the actualy rev-limit was put in to effect.. or does it cut spark? Pretty sure it'd have to be one of the two, otherwise there'd be no rev-limit, other than valve-float, and I know these engines would fall apart at that point

pgmike

iTrader: (27)

i have experienced: 6200rpms in 5th gear at ~134-135mph, revlimited, but no fuel cut.

twardnw

iTrader: (4)

AHGGGG! how does the ECU rev-limit though?? that's what I'm trying to get at. It either has to cut the fuel, or cut the spark... anyone know which it is?